AWS SDK와 StopDBCluster 함께 사용

    /**
     * Stops an Amazon Neptune DB cluster.
     *
     * @param clusterIdentifier the unique identifier of the DB cluster to be stopped
     */
    public CompletableFuture<StopDbClusterResponse> stopDBClusterAsync(String clusterIdentifier) {
        StopDbClusterRequest clusterRequest = StopDbClusterRequest.builder()
                .dbClusterIdentifier(clusterIdentifier)
                .build();

        return getAsyncClient().stopDBCluster(clusterRequest)
                .whenComplete((response, error) -> {
                    if (error != null) {
                        Throwable cause = error.getCause() != null ? error.getCause() : error;

                        if (cause instanceof ResourceNotFoundException) {
                            throw (ResourceNotFoundException) cause;
                        }

                        throw new RuntimeException("Failed to stop DB cluster: " + cause.getMessage(), cause);
                    } else {
                        logger.info("DB Cluster stopped: " + clusterIdentifier);
                    }
                });
    }